<script setup>
import { VDataTableServer } from 'vuetify/labs/VDataTable'
import { paginationMeta } from '@api-utils/paginationMeta'

const searchQuery = ref('')
const selectedStatus = ref()

// Data table options
const itemsPerPage = ref(10)
const page = ref(1)
const sortBy = ref()
const orderBy = ref()

const updateOptions = options => {
  page.value = options.page
  sortBy.value = options.sortBy[0]?.key
  orderBy.value = options.sortBy[0]?.order
}

const isLoading = ref(false)

// 👉 headers
const headers = [
  {
    title: '#ID',
    key: 'id',
  },
  {
    title: 'Trending',
    key: 'trending',
    sortable: false,
  },
  {
    title: 'Total',
    key: 'total',
  },
  {
    title: 'Date',
    key: 'date',
  },
  {
    title: 'Balance',
    key: 'balance',
  },
  {
    title: 'Actions',
    key: 'actions',
    sortable: false,
  },
]

const {
  data: invoiceData,
  execute: fetchInvoices,
} = await useApi(createUrl('/apps/invoice', {
  query: {
    q: searchQuery,
    status: selectedStatus,
    itemsPerPage,
    page,
    sortBy,
    orderBy,
  },
}))

const invoices = computed(() => invoiceData.value?.invoices)
const totalInvoices = computed(() => invoiceData.value?.totalInvoices)

// 👉 Invoice balance variant resolver
const resolveInvoiceBalanceVariant = (balance, total) => {
  if (balance === total)
    return {
      status: 'Unpaid',
      chip: { color: 'error' },
    }
  if (balance === 0)
    return {
      status: 'Paid',
      chip: { color: 'success' },
    }
  
  return {
    status: balance,
    chip: { variant: 'text' },
  }
}

const resolveInvoiceStatusVariantAndIcon = status => {
  if (status === 'Partial Payment')
    return {
      variant: 'success',
      icon: 'tabler-circle-half-2',
    }
  if (status === 'Paid')
    return {
      variant: 'warning',
      icon: 'tabler-chart-pie',
    }
  if (status === 'Downloaded')
    return {
      variant: 'info',
      icon: 'tabler-arrow-down-circle',
    }
  if (status === 'Draft')
    return {
      variant: 'primary',
      icon: 'tabler-device-floppy',
    }
  if (status === 'Sent')
    return {
      variant: 'secondary',
      icon: 'tabler-circle-check',
    }
  if (status === 'Past Due')
    return {
      variant: 'error',
      icon: 'tabler-info-circle',
    }
  
  return {
    variant: 'secondary',
    icon: 'tabler-x',
  }
}

const computedMoreList = computed(() => {
  return paramId => [
    {
      title: 'Download',
      value: 'download',
      prependIcon: 'tabler-download',
    },
    {
      title: 'Edit',
      value: 'edit',
      prependIcon: 'tabler-pencil',
      to: {
        name: 'apps-invoice-edit-id',
        params: { id: paramId },
      },
    },
    {
      title: 'Duplicate',
      value: 'duplicate',
      prependIcon: 'tabler-layers-intersect',
    },
  ]
})

const deleteInvoice = async id => {
  await $api(`/apps/invoice/${ id }`, { method: 'DELETE' })
  fetchInvoices()
}
</script>

<template>
  <section v-if="invoices">
    <VCard id="invoice-list">
      <VCardText class="d-flex align-center flex-wrap gap-4">
        <!-- 👉 Actions  -->
        <div class="me-3 d-flex gap-3">
          <AppSelect
            :model-value="itemsPerPage"
            :items="[
              { value: 10, title: '10' },
              { value: 25, title: '25' },
              { value: 50, title: '50' },
              { value: 100, title: '100' },
              { value: -1, title: 'All' },
            ]"
            style="inline-size: 6.25rem;"
            @update:model-value="itemsPerPage = parseInt($event, 10)"
          />
        </div>

        <VSpacer />

        <div class="d-flex align-center flex-wrap gap-4">
          <!-- 👉 Export invoice -->
          <VBtn
            prepend-icon="tabler-screen-share"
            append-icon="tabler-chevron-down"
            variant="tonal"
            color="secondary"
          >
            Export
          </VBtn>
        </div>
      </VCardText>

      <VDivider />

      <!-- SECTION Datatable -->
      <VDataTableServer
        v-model:items-per-page="itemsPerPage"
        v-model:page="page"
        :loading="isLoading"
        :items-length="totalInvoices"
        :headers="headers"
        :items="invoices"
        class="text-no-wrap rounded-0"
        @update:options="updateOptions"
      >
        <!-- Trending Header -->
        <template #column.trending>
          <VIcon
            size="22"
            icon="tabler-trending-up"
          />
        </template>

        <!-- id -->
        <template #item.id="{ item }">
          <RouterLink :to="{ name: 'apps-invoice-preview-id', params: { id: item.id } }">
            #{{ item.id }}
          </RouterLink>
        </template>

        <!-- trending -->
        <template #item.trending="{ item }">
          <VTooltip>
            <template #activator="{ props }">
              <VAvatar
                :size="30"
                v-bind="props"
                :color="resolveInvoiceStatusVariantAndIcon(item.invoiceStatus).variant"
                variant="tonal"
              >
                <VIcon
                  :size="20"
                  :icon="resolveInvoiceStatusVariantAndIcon(item.invoiceStatus).icon"
                />
              </VAvatar>
            </template>
            <p class="mb-0">
              {{ item.invoiceStatus }}
            </p>
            <p class="mb-0">
              Balance: {{ item.balance }}
            </p>
            <p class="mb-0">
              Due date: {{ item.dueDate }}
            </p>
          </VTooltip>
        </template>

        <!-- Total -->
        <template #item.total="{ item }">
          ${{ item.total }}
        </template>

        <!-- issued Date -->
        <template #item.date="{ item }">
          {{ item.issuedDate }}
        </template>

        <!-- Balance -->
        <template #item.balance="{ item }">
          <div>
            <VChip
              v-if="typeof ((resolveInvoiceBalanceVariant(item.balance, item.total)).status) === 'string'"
              :color="resolveInvoiceBalanceVariant(item.balance, item.total).chip.color"
            >
              {{ (resolveInvoiceBalanceVariant(item.balance, item.total)).status }}
            </VChip>
            <span
              v-else
              class="text-high-emphasis"
            >
              {{ Number((resolveInvoiceBalanceVariant(item.balance, item.total)).status) > 0 ? `$${(resolveInvoiceBalanceVariant(item.balance, item.total)).status}` : `-$${Math.abs(Number((resolveInvoiceBalanceVariant(item.balance, item.total)).status))}` }}
            </span>
          </div>
        </template>

        <!-- Actions -->
        <template #item.actions="{ item }">
          <IconBtn @click="deleteInvoice(item.id)">
            <VIcon icon="tabler-trash" />
          </IconBtn>

          <IconBtn :to="{ name: 'apps-invoice-preview-id', params: { id: item.id } }">
            <VIcon icon="tabler-eye" />
          </IconBtn>

          <MoreBtn
            :menu-list="computedMoreList(item.id)"
            color="undefined"
            item-props
          />
        </template>
        <template #bottom>
          <VDivider />
          <div class="d-flex align-center justify-sm-space-between justify-center flex-wrap gap-3 pa-5 pt-3">
            <p class="text-sm text-disabled mb-0">
              {{ paginationMeta({ page, itemsPerPage }, totalInvoices) }}
            </p>

            <VPagination
              v-model="page"
              :length="Math.ceil(totalInvoices / itemsPerPage)"
              :total-visible="$vuetify.display.xs ? 1 : Math.ceil(totalInvoices / itemsPerPage)"
            >
              <template #prev="slotProps">
                <VBtn
                  variant="tonal"
                  color="default"
                  v-bind="slotProps"
                  :icon="false"
                >
                  Previous
                </VBtn>
              </template>

              <template #next="slotProps">
                <VBtn
                  variant="tonal"
                  color="default"
                  v-bind="slotProps"
                  :icon="false"
                >
                  Next
                </VBtn>
              </template>
            </VPagination>
          </div>
        </template>
      </VDataTableServer>
      <!-- !SECTION -->
    </VCard>
  </section>
</template>

<style lang="scss">
#invoice-list {
  .invoice-list-actions {
    inline-size: 8rem;
  }

  .invoice-list-search {
    inline-size: 12rem;
  }
}
</style>
